Register

CalRegional Medical Assistant Practice Exam

Access More Questions
Which of the following is an example of an adrenergic agonist?
Correct Answer:
Epinephrine
Explanation:
An adrenergic agonist activates adrenergic receptors in the sympathetic nervous system, mimicking the effects of adrenaline. Epinephrine is a classic example because it binds to both alpha and beta receptors throughout the body, causing responses like increased heart rate, bronchodilation, and vasoconstriction needed in emergencies. The other substances don’t activate these receptors: acetaminophen reduces pain and fever through non-adrenergic mechanisms; diphenhydramine blocks histamine receptors; citalopram increases serotonin by inhibiting its reuptake. So epinephrine best fits the definition of an adrenergic agonist.

Access more questions from this quiz

Continue to CalRegional Medical Assistant Practice Exam for more practice questions and the full quiz experience.

Access More Questions